What Is Speed Drug?

Speed drug is the street name for amphetamine sulfate, a powerful central nervous system (CNS) stimulant that accelerates communication between the brain and the body. It belongs to the broader amphetamine drug class and is classified as a Schedule II controlled substance in the United States.

Most people asking “what is speed drug” want one clear answer: speed is an illicit form of amphetamine, not a separate drug category. It is chemically related to prescription stimulants like Adderall and Dexedrine but is manufactured and sold illegally with no quality control, no standardized dosing, and unpredictable purity.

Knowing what speed is, what it does to the body, and why it causes addiction is the first step toward recognizing a problem in yourself or someone you care about.

Key Highlights

• Speed is the street name for amphetamine sulfate, a Schedule II CNS stimulant that floods the brain with dopamine, norepinephrine, and serotonin, producing intense but short-lived stimulation.
• According to the 2020 National Survey on Drug Use and Health, 10.3 million people in the US misused a central nervous system stimulant in the past year, and 758,000 had a prescription stimulant use disorder (SAMHSA, 2021).
• Speed is not the same as methamphetamine, though both are amphetamines. Meth is more potent because a greater share of it crosses the blood-brain barrier at equivalent doses.
• Common street names include whiz, billy, uppers, crank, bennies, and dexies, depending on the region and the physical form of the drug.
• Speed addiction is clinically diagnosed as stimulant use disorder and requires professional detox and behavioral treatment for safe, lasting recovery.

What Is the Drug Speed? Definition and Chemical Identity

Speed is the most widely used street name for amphetamine sulfate, a synthetic phenethylamine compound first synthesized in 1887. Illicit speed is typically a low-purity form of amphetamine, often diluted with glucose, caffeine, vitamin C, or other cutting agents that reduce potency and increase risk.

Amphetamines work by triggering the mass release of dopamine, norepinephrine, and serotonin from nerve terminals while simultaneously blocking their reuptake. This floods the brain with stimulation, driving the euphoria, energy surge, and appetite suppression that characterize the speed high.

The Drug Enforcement Administration (DEA) classifies amphetamine as a Schedule II controlled substance because it has accepted medical uses, including treating ADHD and narcolepsy, alongside a high potential for abuse and physical dependence. Prescription amphetamines include Adderall (mixed amphetamine salts) and Dexedrine (dextroamphetamine). Street speed is the same chemical family but with none of the pharmaceutical purity, dosage precision, or safety oversight.

What Does Speed Look Like? Physical Forms and Street Names

Speed does not have a single recognizable appearance. Its form, color, and texture vary depending on how it was manufactured and what it was cut with.

• Powder: The most common form. Usually white, off-white, or pale yellow. Fine-grained, similar in appearance to baking powder or crushed aspirin.
• Paste (base speed): Wet, putty-like consistency. Typically off-white, grey, or light yellow. Generally higher purity than powder.
• Crystals: Chunky or shard-like pieces, clearer or whiter than typical meth crystals. Less common than powder or paste.
• Pills: Historically sold as Benzedrine tablets. Still circulates in some illicit markets as pressed tablets with no consistent markings.

Speed goes by many street names depending on the country and form of the drug:

• Speed
• Whiz or Whizz
• Billy or Billy Whizz
• Uppers
• Bennies
• Dexies
• Crank
• Goey
• Base

How Is Speed Used? Routes of Administration and Risks

The method someone uses to take speed significantly changes how fast it hits, how long it lasts, and what kind of physical damage it causes over time.

The following are the routes of administration and risks of using speed:

• Swallowing (oral): Effects begin in 30 to 60 minutes and last 4 to 8 hours. The lowest-risk method of the four, though still dangerous.
• Snorting: Effects begin in 3 to 5 minutes and last 3 to 6 hours. Causes progressive damage to nasal passages and the sinus lining with repeated use.
• Smoking: Effects begin in under a minute and last 2 to 4 hours. Causes lung damage and airway burns over time.
• Injecting (IV): Effects are felt within seconds and last 2 to 4 hours. Carries the highest risk of any method, including exposure to HIV and hepatitis C through shared needles and collapsed veins.
• Bombing (swallowed in a wrap): Effects begin in 30 to 45 minutes and last 4 to 8 hours. Wrapping speed in a cigarette paper or tissue and swallowing it whole delays onset but makes dosing hard to control and increases the risk of accidental overdose.

When stimulant use escalates to injecting or combining with other substances, the risk of overdose and serious infection rises sharply. Our inpatient medical detox program provides 24-hour clinical supervision through every phase of amphetamine withdrawal.

What Does Speed Do? Short-Term and Long-Term Effects on the Brain and Body

Short-Term Effects of Speed

Speed activates the fight-or-flight response by flooding the brain with dopamine and norepinephrine. Effects begin within minutes (faster when snorted or injected) and typically last four to eight hours depending on dose and route.

• Intense euphoria and an elevated sense of well-being
• Sharply increased energy and dramatically reduced fatigue
• Decreased appetite and thirst
• Elevated heart rate, blood pressure, and body temperature
• Dilated pupils and faster breathing
• Dry mouth and excessive sweating
• Increased confidence, talkativeness, and sociability
• Reduced need for sleep
• Jaw clenching and teeth grinding (bruxism)
• Restlessness and an inability to stay still

Long-Term Effects of Chronic Speed Use

Repeated speed use causes cumulative and often lasting damage to the brain and body. The dopamine system becomes progressively depleted, making it increasingly difficult to feel pleasure, motivation, or reward without the drug. This depletion is one of the core mechanisms driving stimulant addiction.

• Severe dental decay caused by dry mouth, teeth grinding, and poor nutrition
• Amphetamine-induced psychosis: paranoia, auditory and visual hallucinations, and delusional thinking that can closely resemble schizophrenia
• Cardiovascular damage: irregular heartbeat, increased risk of heart attack and stroke
• Significant weight loss and malnutrition
• Cognitive decline: memory problems, reduced attention span, and impaired executive function
• Persistent mood disorders including chronic depression and anxiety
• Increased susceptibility to infections, particularly HIV, hepatitis C, and MRSA in those who inject
• Social isolation and relationship breakdown

People experiencing co-occurring depression, anxiety, or trauma alongside speed addiction benefit most from dual diagnosis treatment, which addresses both the addiction and the underlying mental health condition at the same time.

Speed vs. Meth: What Is the Difference?

Speed and meth are related but not the same drug. Both belong to the amphetamine chemical family, but methamphetamine has a slightly different molecular structure that allows a greater proportion of the drug to cross the blood-brain barrier at comparable doses. This makes meth significantly more potent and longer-lasting than speed.

Illicit “speed” sold on the street is most often amphetamine sulfate, but the term is sometimes used loosely for low-purity methamphetamine, particularly in the US. The key practical distinction is potency and duration: meth hits harder, lasts longer, and carries a higher overdose risk at equivalent doses.

For a detailed breakdown of how stimulants compare, read our overview of cocaine vs. meth or learn more about our methamphetamine addiction treatment program.

Is Adderall Speed? Prescription Stimulants vs. Illicit Amphetamine

Yes, in the pharmacological sense, Adderall is a form of speed. Adderall is a prescription medication containing mixed amphetamine salts (75% dextroamphetamine and 25% levoamphetamine). It is chemically an amphetamine and therefore belongs to the same drug class as street speed.

The critical differences between Adderall and illicit speed are purity, dosage control, and legal status. Adderall is manufactured to pharmaceutical standards with precise, verified dosing. Street speed is unregulated, frequently cut with unknown substances, and carries unpredictable potency that makes every dose a gamble.

When used as prescribed under medical supervision for ADHD or narcolepsy, Adderall is considered safe and effective. When misused at higher doses, used recreationally, or taken by someone without ADHD, it carries the same addiction risk, cardiovascular dangers, and psychiatric complications as illicit speed.

People who have developed a dependence on prescription stimulants can find targeted help through our Adderall addiction treatment program at Still Detox.

Is Speed Addictive? Signs of Speed Addiction

Yes. Speed is highly addictive. Repeated use causes the brain to reduce its natural dopamine production and downregulate its dopamine receptors, creating a state where the person needs increasing amounts of speed just to feel normal. This is the neurological cycle of stimulant use disorder, the clinical DSM-5 diagnosis for speed addiction.

Signs that speed use has crossed into addiction include:

• Using speed more often or in larger amounts than originally intended
• Repeated failed attempts to cut down or stop
• Spending significant time obtaining, using, or recovering from speed
• Experiencing intense cravings between doses
• Neglecting work, family, or social responsibilities because of speed use
• Continuing to use despite clear physical health damage or relationship breakdown
• Developing tolerance, needing more of the drug to achieve the same effect
• Experiencing withdrawal symptoms when stopping or reducing use
• Taking risks while on speed, such as driving or combining it with alcohol or opioids

Stimulant use disorder can develop faster than most people expect. Research suggests it can begin forming after as little as one week of heavy use in some cases (American Addiction Centers, 2024). Early recognition matters. Our heavy amphetamine use resource explains how escalating use progresses to dependence.

Speed Withdrawal Symptoms and Timeline

Speed withdrawal is primarily psychological rather than physically dangerous. However, it can be intensely uncomfortable and difficult to navigate without professional support. When speed is removed, the brain, now accustomed to constant chemical flooding, reacts sharply to the sudden absence of stimulation.

• Crash (hours 1 to 24 after last dose): Extreme fatigue, hypersomnia, intense hunger, and a sudden drop in mood as the stimulant effects wear off completely.
• Acute withdrawal (days 2 to 7): Depression, anxiety, strong cravings, irritability, and muscle aches. This is typically the most difficult and mentally demanding phase.
• Subacute phase (weeks 2 to 4): Mood swings, disrupted sleep, low motivation, and anhedonia, the inability to feel pleasure from activities that previously brought enjoyment.
• Post-acute withdrawal syndrome or PAWS (months 1 to 6 or longer): Persistent low mood, cognitive fog, and recurring cravings triggered by stress or environmental cues. More common in long-term heavy users.

Depression during the acute phase can be severe and in some cases can include suicidal thinking, which is why medically supervised detox is strongly recommended over quitting cold turkey at home. Structured cognitive behavioral therapy (CBT) has the strongest clinical evidence base for managing stimulant withdrawal symptoms and preventing relapse.

How Long Does Speed Stay in Your System?

Detection windows for speed depend on the test type, dose, frequency of use, body composition, metabolic rate, hydration level, and urine pH.

• Urine: Detectable for 1 to 4 days. The most commonly used test type. Urine pH is a key variable, with acidic urine speeding excretion and alkaline urine extending the detection window.
• Blood: Detectable for up to 24 hours. Typically used after accidents, arrests, or in clinical settings where recent use needs to be confirmed quickly.
• Saliva: Detectable for 1 to 3 days. Commonly used for roadside drug testing because of how quickly it can be administered.
• Hair follicle: Detectable for up to 90 days. The most sensitive test for long-term or repeated use patterns, as amphetamine metabolites become embedded in the hair shaft as it grows.

Heavy or chronic users remain detectable at the longer end of each range. Attempting to dilute results by drinking large amounts of water does not reliably reduce detection windows and can trigger a diluted-sample flag on the test.

A Brief History of Speed: From Benzedrine to Modern Amphetamine Abuse

Amphetamine was first synthesized in 1887 and introduced commercially in the 1930s as Benzedrine, an over-the-counter inhaler used to treat nasal congestion. By the 1940s, military forces on multiple sides of World War II distributed amphetamine tablets to reduce fatigue and sustain combat performance in soldiers.

Through the 1950s and 1960s, amphetamine pills, including black beauties (Biphetamine) and bennies (Benzedrine), were widely sold as diet pills and used by truck drivers, students, and working professionals. The counterculture of the 1960s embraced speed heavily before its addiction and health risks became publicly recognized.

The Controlled Substances Act of 1970 moved amphetamine to Schedule II, dramatically restricting legal access. Illicit manufacturing and distribution grew steadily through the 1980s and 1990s, and amphetamine abuse has remained a significant public health concern in the United States, United Kingdom, and Australia ever since.

Speed Overdose: Warning Signs and What to Do

A speed overdose is a medical emergency. It occurs when the cardiovascular and central nervous systems are overwhelmed by the amount of amphetamine in the body at one time. Overdose risk increases significantly when speed is combined with other stimulants, when alcohol is involved, or when a person uses after a period of abstinence and their tolerance has dropped.

Warning signs of a speed overdose include:

• Chest pain or a racing, irregular heartbeat
• Dangerously high body temperature (hyperthermia)
• Severely elevated blood pressure
• Seizures
• Loss of consciousness
• Extreme confusion, agitation, or psychotic behavior
• Difficulty breathing

Call 911 immediately if any of these signs are present. Do not leave the person alone. Keep them as calm and cool as possible. Do not give them food, water, or any other substance while waiting for emergency services to arrive.

Speed Addiction Treatment and Detox at Still Detox

Speed addiction is treatable. With the right level of clinical support, most people can safely detox from amphetamines and build a durable foundation for lasting recovery. Still Detox offers medically supervised detox and residential treatment at our Boca Raton, Florida facility.

Our treatment approach for stimulant use disorder includes:

• Medical detox: 24-hour nursing and physician supervision through the acute withdrawal phase, with medications to manage anxiety, insomnia, depression, and cardiovascular symptoms.
• Cognitive behavioral therapy (CBT): The gold-standard behavioral treatment for stimulant addiction, targeting the thought patterns, emotional triggers, and behavioral cycles that drive continued use.
• Dual diagnosis care: Many people who use speed have underlying anxiety, depression, ADHD, or trauma. Our dual diagnosis program treats both conditions simultaneously, which produces significantly better long-term outcomes.
• Medication-assisted treatment (MAT): While no FDA-approved medications specifically target stimulant withdrawal, our medical team uses evidence-based protocols for symptom management. Read our MAT FAQ for full detail.
• Long-term residential care: For those who need a structured environment beyond initial detox, our long-term residential treatment program provides continued therapeutic structure and community support.

Those struggling with speed or other stimulants can find structured, clinical support through our amphetamine addiction treatment program at Still Detox.

Frequently Asked Questions

What does speed actually do to your body?

Speed forces the brain to release large amounts of dopamine, norepinephrine, and serotonin while blocking their reuptake. Heart rate and blood pressure rise sharply, body temperature climbs, and the nervous system shifts into overdrive. Short term, this produces euphoria and energy. Over repeated use, this cycle depletes the dopamine system and causes lasting cardiovascular and neurological damage.

How long does speed stay in your system?

Speed is detectable in urine for one to four days, in blood for up to 24 hours, in saliva for one to three days, and in hair follicles for up to 90 days. The exact window depends on dose, frequency of use, body composition, metabolic rate, and urine pH. Chronic heavy users consistently test at the longer end of each range.

What is the brand name of speed drugs?

Speed itself has no brand name because it is an illicit drug. The amphetamine it is derived from is sold under prescription names including Adderall (mixed amphetamine salts), Dexedrine (dextroamphetamine), and Vyvanse (lisdexamfetamine). Historically, Benzedrine was the first commercially marketed amphetamine product, introduced in the 1930s.

What was the speed drug in the 1960s?

In the 1960s, speed primarily referred to Benzedrine and Dexedrine tablets, which were legally prescribed but widely diverted for recreational use. Biphetamine capsules, known as “black beauties,” were especially popular during this era. These pills were used by students, musicians, and counterculture figures before the Controlled Substances Act of 1970 placed amphetamines on Schedule II.

Is speed an opioid?

No. Speed is a stimulant, not an opioid. Opioids work by binding to opioid receptors and slowing the central nervous system. Speed does the opposite: it dramatically increases CNS activity. Mixing speed with opioids is particularly dangerous because the stimulant effects can mask the sedating effects of opioids, increasing the risk of accidental opioid overdose.

Can speed cause psychosis?

Yes. Amphetamine-induced psychosis is a recognized clinical condition involving paranoia, auditory hallucinations, visual hallucinations, and delusional thinking. It is more likely with heavy use, IV injection, or in people with a personal or family history of psychotic disorders. Symptoms typically resolve within days to one week of abstinence but can persist for weeks or months in chronic heavy users.

What are the early signs someone is using speed?

Early signs include a sudden and dramatic increase in energy and talkativeness, significant appetite loss and rapid weight loss, staying awake for unusually long periods, dilated pupils, excessive sweating, jaw clenching, and hyperactivity followed by prolonged crash periods of deep sleep. Mood swings and increased irritability between uses are also common early indicators.

Is speed the same as meth?

They are related but not identical. Both are amphetamines, but methamphetamine has a slightly different molecular structure that allows more of the drug to reach the brain at equivalent doses, making it more potent and longer lasting. In some street contexts the terms overlap, particularly for low-purity meth powder sold as speed, which adds to the confusion between them.

References

1. Substance Abuse and Mental Health Services Administration (SAMHSA). (2021). 2020 National Survey on Drug Use and Health: Detailed tables. U.S. Department of Health and Human Services. https://www.samhsa.gov/data/release/2020-national-survey-drug-use-and-health-nsduh-releases
2. Drug Enforcement Administration (DEA). (2020). Drug fact sheet: Amphetamines. U.S. Department of Justice. https://www.dea.gov/sites/default/files/2020-06/Amphetamines-2020_0.pdf
3. National Institute on Drug Abuse (NIDA). (2019). Methamphetamine DrugFacts. National Institutes of Health. https://nida.nih.gov/publications/drugfacts/methamphetamine
4. MedlinePlus. (2022). Substance use: Amphetamines. U.S. National Library of Medicine. https://medlineplus.gov/ency/patientinstructions/000792.htm
5. American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). American Psychiatric Publishing.
6. American Addiction Centers. (2024). Amphetamine addiction: Uses, side effects, and treatment. AmericanAddictionCenters.org.
7. Heal, D. J., Smith, S. L., Gosden, J., and Nutt, D. J. (2013). Amphetamine, past and present: A pharmacological and clinical perspective. Journal of Psychopharmacology, 27(6), 479-496.
8. Shoptaw, S. J., Kao, U., Heinzerling, K., and Ling, W. (2009). Treatment for amphetamine withdrawal. Cochrane Database of Systematic Reviews, 2009(2), CD003021.